Bunz, A M G

Bunter, K L

Morrison, R

Luxford, R G

Hermesch, Susanne

2019

This study examined the effect of temperature grouping (T-group) on genetic parameters for farrowing rate from first insemination (FR). Further, this study investigated if genotype by T-group interaction for FR exists. The lowest FR was observed in T-group 1 and 3, which were both characterised by high mean maximum temperature (>29⁰C) prior to mating. The heritability of FR across all T-groups differed only marginally from each other and were low (0.03, 0.00, 0.03, 0.02, and 0.03 for T-group 1, 2, 3, 4 and 5, respectively). Genetic correlations between FR recorded in different T-groups were generally positive and high (>0.70), with the exception of the genetic correlation for FR between T-group 1 and 5 which was lowly negative and close to zero (-0.10±0.27). This is an indication that FR in T-group 1 and T-group 5 were two genetically different traits and should be treated as separate traits in pig breeding programs.

Proceedings of the Association for the Advancement of Animal Breeding and Genetics, v.23, p. 155-158

1328-3227

https://hdl.handle.net/1959.11/28651

Association for the Advancement of Animal Breeding and Genetics (AAABG)

Genotype by Temperature Grouping Interaction for Farrowing Rate at First Insemination

Conference Publication

Publication